Along with many other observers of the mortgage scene, I have long attributed the imperfections of the market in large part to information asymmetry -- the fact that borrowers have access to less information than the loan originators they deal with. Borrowers enter the market once or a few times in their life, whereas originators are in it every day.

The obvious remedy for information asymmetry is to level the playing field by requiring lenders to provide borrowers with the information they need, and this is the intent of the federal Truth in Lending Act (TILA) and the Real Estate Settlement Procedures Act (RESPA), along with many similar state laws. While these efforts have all failed, I always attributed the failures to regulatory ineptitude: Regulators have overloaded borrowers with useless information while omitting what borrowers really needed.

One of the benefits of offering mortgages on my website is that I can provide borrowers with the information I think they should have, and then I can watch to see if they use it properly. Note that I don't infringe on their privacy by doing this because they are anonymous when I observe them.

I recently decided to check on how borrowers who qualified for both conventional and FHA mortgages were deciding between them. This can be challenging because their interest rates may differ, lender fees may differ, and mortgage insurance premiums will always be different.

In balancing these off against one another, one should consider that interest rates are paid over the life of the loan, lender fees are paid upfront, and mortgage insurance premiums can be either or both. Usually, FHAs have lower interest rates but higher mortgage insurance premiums, while lender fees can go either way.

I advise potential borrowers selecting a mortgage on my website to choose the mortgage with the lowest total cost over the period they expect to have the mortgage, which is a figure we calculate for them. Total cost covers the rate, fees and insurance premiums, and adjusts each for the time value of money. A proviso is that the borrower can afford the initial monthly payment and have the upfront cash required.

Do borrowers follow this advice? I recently looked over the shoulder of a borrower who wanted a 30-year fixed-rate mortgage and was offered a choice between conventional and FHA loans having the following features: